Research on photocatalytic degradation of roxithromycin by graphene based S doped TiO2
Luo Xiao1, Hao Tongyao1, Zhao Yan2，Yue Lin1
1.College of Environmental Science and Engineering of Hebei University of Science and Technolgy, Pollution Prevention and Control Biotechnology Laboratory of Hebei Province, Shijiazhuang 050000, China；2.Hebei Yipin Pharmaceutical Corporation Ltd., Shijiazhuang 050000, China
In order to degrade roxithromycin in wastewater, S-TiO2 were prepared by wet method (calcining at a certain ratio of TiO2 and thiourea), and loaded onto the graphene (RGO), the photocatalyst of S doped TiO2 and graphene composites (S-TiO2-RGO) was obtained. The structure of photocatalyst was characterized by transmission electron microscopy(TEM), scanning electron microscopy(SEM), X ray diffraction (XRD) and UV vis diffuse scattering. With xenon lamp as light source and S-TiO2-RGO as photocatalyst, roxithromycin in wastewater was degraded. The results show that when the photocatalyst dosage was 500 mg / L, pH=4, reaction time was 210 min, the initial concentration of wastewater was 100 mg / L, roxithromycin degradation rate can reach 91.6%. The photocatalytic mechanism of S-TiO2-RGO was explored by adding holes and the trapping agent of ·OH.
罗 晓,郝彤遥,赵 彦，岳 琳. 石墨烯基S掺杂TiO2光催化降解罗红霉素的研究[J]. 煤炭与化工, 2016, 39(10): 1-7.
Luo Xiao, Hao Tongyao, Zhao Yan，Yue Lin. Research on photocatalytic degradation of roxithromycin by graphene based S doped TiO2. CCI, 2016, 39(10): 1-7.
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